Kohler LH630-775 Service Manual page 14

Section 1
Safety and General Information
Ignition
Spark Plug Type (Champion
Spark Plug Gap ........................................................................................................ 0.76 mm (0.030 in.)
Spark Plug Torque ................................................................................................... 24.4-29.8 N·m (18-22 ft. lb.)
Ignition Module Air Gap ........................................................................................ 0.203/0.305 mm (0.008/0.012 in.)
Ignition Module Fastener Torque .......................................................................... 6.2 N·m (55 in. lb.) into new hole
Rectifier-Regulator Fastener Torque ..................................................................... 4.0 N·m (35 in. lb.)
Muffler
Muffler Retaining Nuts Torque ............................................................................. 24.4 N·m (216 in. lb.)
Oil Filter
Oil Filter Torque ....................................................................................................... 3/4-1 turn after gasket contact
Piston, Piston Rings, and Piston Pin
Piston-to-Piston Pin ................................................................................................. 0.006/0.018 mm (0.0002/0.0007 in.)
Piston Pin Bore I.D.
New .................................................................................................................... 17.006/17.013 mm (0.6695/0.6698 in.)
Max. Wear Limit ............................................................................................... 17.025 mm (0.6703 in.)
Piston Pin O.D.
New .................................................................................................................... 16.995/17.000 mm (0.6691/0.6693 in.)
Max. Wear Limit ............................................................................................... 16.994 mm (0.6691 in.)
Top Compression Ring-to-Groove Side Clearance
LH630,LH640 .................................................................................................... 0.040/0.086 mm (0.0016/0.0034 in.)
LH685,LH690 .................................................................................................... 0.050/0.096 mm (0.0020/0.0038 in.)
LH750,LH755,LH760,LH775 ........................................................................... 0.014/0.041 mm (0.0005/0.0016 in.)
Middle Compression Ring-to-Groove Side Clearance
LH630,LH640 .................................................................................................... 0.040/0.086 mm (0.0016/0.0034 in.)
LH685,LH690 .................................................................................................... 0.030/0.076 mm (0.0012/0.0030 in.)
LH750,LH755,LH760,LH775 ........................................................................... 0.012/0.039 mm (0.0004/0.0015 in.)
Oil Control Ring-to-Groove Side Clearance
LH630,LH640 .................................................................................................... 0.046/0.196 mm (0.0018/0.0077 in.)
LH685,LH690 .................................................................................................... 0.046/0.196 mm (0.0018/0.0077 in.)
LH750,LH755,LH760,LH775 ........................................................................... 0.026/0.176 mm (0.0010/0.0070 in.)
Top and Middle Compression Ring End Gap
LH630,LH640
New Bore
Top Ring ......................................................................................................... 0.180/0.380 mm (0.0071/0.0150 in.)
Middle Ring ................................................................................................... 0.250/0.450 mm (0.0098/0.0177 in.)
Used Bore (Max.) ............................................................................................. 0.77 mm (0.030 in.)
²Measure 6 mm (0.236 in.) above the bottom of the piston skirt at right angles to the piston pin.
1.12
®
or equivalent) ....................................................... RC14YC
4.0 N·m (35 in. lb.) into used hole